Percolator.



T. ABTMEYER.

PERGOLATOR.

APPLIGATION FILED JUNE 5, 1913.

Patented Jan. 12, 1915.

| VENTOR WITNESSES:

ATTORN EY rnnonoan anrmnrniz, or wILKINsBURe VANIA.

, PENNSYLVANIA, ASSIGNOR T0 WESTING:

HOUSE ELECTRIC AND MANUFACTURINGCOMPANY, CORPORATION OF PENNSYL- PERCOLATOR.

Application filed June 5, 1913. Serial No. 771,861.

One object of my invention is to provide a device of the above-indicated character which shall be simple and inexpensive in construction, convenient to assemble and reliable and particularly effective in operation.

Another object of my invention is to provide a percolator which, by reason of its peculiar structure, shall be especially economical in operation and maintenance.

In the prior art, percolators have em bodied heating members that utilize either an inner or an outer liquid-heating surface exclusively, with the result of loss of efficiency during operation and short life of the heating element by reason of overheatmg.

According to my present invention, 1 employ a heating member that; is provided with both inner and outer liquid-heating surfaces, thereby securing rapid and forceful operation at a relatively lowv current consumption and, since thepossibility of overheating the element is precluded, by

reason of the water jacket on three sides, a

relatively long life of the heating element is insured.

In the accompanying drawing, Figure 1 that embodies a percolating'device shown in longitudinal section and constructed 1n accordance with my inventiomand Fig. 2 is a that any other suitable means of assembly and support may be employed.

The percolating device comprises an Specification of Letters Patent.

THEODC RE ABTMEYER,

is a view of aportion of a suitable vessel Patented Jan. 12, 1915.

electric heating element 5, a suitably heatinsulatedannular incasing member 6 and a fountain tube 7.

The heating element 5 preferably comprises an electrical conductor 8 thatjs helically wound on an insulating hollow spool 9 having external end flanges 10,. by which construction I avoid the use of any special insulating material for inclosing the' conductor 8, inasmuch as the annular air-space that is formed provides the necessary electrical insulation. The ends of the conductor 8 are preferably disposed in suitable openings 11 in the spool 9 and are connected to the terminal members a in any appropriate fashion.

' The member 6 comprises an inner cylin-' drical tube 12, thatiis closed at the bottom, and an outer cylindrical shell 13 that are respectively adapted to engage the central opening and the upper end flange 10 of the spool 9, thus providing surfaces that are adapted for liquid-heatingpurposes both within and without the heating element. The shell 13 has a lower expanded portion upon which is adapted to rest a cylindrical shell 14 that,has a contracted upper end to engage the fountain tube 7 and is disposed around the shell 13 to form a suitable liquidcontaining chamber 15. An outer shell l6 surrounds the shell 14 and issuitably spaced therefrom for heat-insulating purposes, the corresponding ends of the shells being suitably united. The lower ends of the shells 1 t andv 16 may be provided with outwardlydisposed lips 17, or other suitable means, for admitting liquid to the chamber 15.

The fountain tube 7, that may be of any convenient form, extends through the upper endof the shell 14 and has its lower end preferably adjacent to the bottom "wall of the central tube 12. A plurality of openings deemed sufficiently well known to obviate the necessity of any extended description. i

One path of the percolating liquid maybe traced as follows: Liquid is admitted through the lips 17 to the chamber 15 and passes upwardly and then. downwardly into the central tube 12 and next through the fountain tube 7, again to the main body of the vessel 3. Another path leads directly from the chamber 15 through the openings claims.

I claim as my invention: 1. In a percolating element, the combination with a fountain tube, of a heating mem- 2. Ina percolating element, the combination with a fountain tube, of a heating member, and liquid-containing means for utilizing an inner and an outer heating surface thereof.

I 3. In a percolating element, the combination with a' fojuntain tube, of a heating member and lliquidscontaining chambers disposedboth within andwithout said heating member and in good thermal contact therewith.

In a percolating element, the combinalion with a heating member, of an outer annular chamber and an inner chamber severally in good thermal contact with said member, and a fountain tube disposed with in said inner chamber. s

5. In a percolating element, the combination with a longitudinally-disposed heating member, of an outer annular chamber and; an inner chamber severally longitudinally disposed and in good thermal contact with said member, a fountain tube disposed within said inner chamber, and means for admitting liquid to said chambers.

6. A heater adapted for immersion in a liquid-containing vessel and comprising a heating member, an outer annular chamber and an inner chamber severally in :good thermal contact with said member, and a fountain tube disposed within said inner chamber.

7. An electrically heated percolator comprising an annular heating element, a fountain tube disposed within the said element, and a heat-insulating annular member surrounding the said heating element and spaced therefrom.

8. An electrically heated percolator comprising an annular heating element, a fountain tube disposed within the said element, and an annular member surrounding the said heating element, spaced therefrom, and

having a reduced end that is secured to the said fountain tube.

9. An electrically heated percolator comprising an annular heating element provided with an inner and outer casing, the outer casing having an outwardly enlarged portion, a fountain tube disposed within the said heating element, an annular member surrounding the said heating element, spaced therefrom, and having a reduced end that is secured to the said fountain tube, the other end resting upon the enlarged portion of the casing, and means for permitting the entrance of liquid between the saidv annular member and the heating element.

' In testimony whereof, I have hereunto subscribed my name this 28th day of May THEODORE ABTMEYER.

Witnesses:

J. R. LANGLEY, B. B. HINES. 

